431634465 has 12 divisors (see below), whose sum is σ = 748166484. Its totient is φ = 230205024.

The previous prime is 431634461. The next prime is 431634479. The reversal of 431634465 is 564436134.

It can be written as a sum of positive squares in 2 ways, for example, as 202293729 + 229340736 = 14223^2 + 15144^2 .

It is not a de Polignac number, because 431634465 - 2² = 431634461 is a prime.

It is a super-2 number, since 2×431634465² = 372616622751672450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431634461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4795894 + ... + 4795983.

It is an arithmetic number, because the mean of its divisors is an integer number (62347207).

Almost surely, 2^431634465 is an apocalyptic number.

431634465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

431634465 is a deficient number, since it is larger than the sum of its proper divisors (316532019).

431634465 is a wasteful number, since it uses less digits than its factorization.

431634465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591888 (or 9591885 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 431634465 is about 20775.8144244696. The cubic root of 431634465 is about 755.7393543822.

It can be divided in two parts, 4316 and 34465, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 431634465 in words is "four hundred thirty-one million, six hundred thirty-four thousand, four hundred sixty-five".